Finding the Fourth Proportional to 127,540.23, 191,228.28 and 60,978.88

Step by Step Solution

1. Step 1: Write the proportion equation
   127,540.23 : 191,228.28 = 60,978.88 : x
2. Step 2: Convert to fraction form
   127,540.23/191,228.28 = 60,978.88/x
3. Step 3: Cross multiply
   127,540.23x = 191,228.28 × 60,978.88
4. Step 4: Simplify right side
   127,540.23x = 11,660,886,338.73
5. Step 5: Solve for x
   x = 11,660,886,338.73/127,540.23
6. Step 6: Final answer
   x = 91,429.09